EP0693591B1 - Verfahren zum Beschichten einer Strasse - Google Patents

Verfahren zum Beschichten einer Strasse Download PDF

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Publication number
EP0693591B1
EP0693591B1 EP95304826A EP95304826A EP0693591B1 EP 0693591 B1 EP0693591 B1 EP 0693591B1 EP 95304826 A EP95304826 A EP 95304826A EP 95304826 A EP95304826 A EP 95304826A EP 0693591 B1 EP0693591 B1 EP 0693591B1
Authority
EP
European Patent Office
Prior art keywords
roller
road
screed
surfacing
strike
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95304826A
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English (en)
French (fr)
Other versions
EP0693591A1 (de
Inventor
David Nicholas Kilner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Colas SA
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Colas SA
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Filing date
Publication date
Application filed by Colas SA filed Critical Colas SA
Publication of EP0693591A1 publication Critical patent/EP0693591A1/de
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Publication of EP0693591B1 publication Critical patent/EP0693591B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4806—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing
    • E01C19/4826—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing the materials being aggregate mixed with binders

Definitions

  • This invention relates to a method of surfacing roads.
  • the screeding contact surfaces are difficult to maintain in a clean condition.
  • the practice of heating them, which is conventionally used for hot materials, would be counter-productive and likely to increase the problem. It has been found that any non-uniform build-up causes the new surface to be gouged longitudinally, and causes transverse unevenness.
  • EP-A-0 324 491 discloses a method of renewing a road surface of bituminous mix, with cold application of the recycled covering material. This method comprises, amongst other steps, the one of forming the new road surface by depositing and levelling the mixture by means of a material leveller (scraper), for example of the vibration-hammering finishing beam type.
  • a material leveller for example of the vibration-hammering finishing beam type.
  • the present invention is based on an appreciation of the problems described above, and on the realisation that the dragging effect is caused by the forces generated in the materials resulting from the different relative velocities of the substrate and the screed plate with respect to the material sandwiched in between, for a given compaction coefficient.
  • the novel solution is to provide a screed that, while continuing to define the contour of the surface (flat or curved), is movable relative to the vehicle/applicator, and opposite to the direction of travel of the applicator.
  • the screed moves at the same or similar velocity as the substrate (road) and in the same relative direction.
  • the material contact zone of the screed should be maintained free of any material build-up ; for example, the screed may be lubricated or scraped in such a way that either the surfacing material does not attach to it, or is periodically removed.
  • a convenient and preferred loss motion solution to both given problems of the prior art is to make the screed in the form of an arrangement comprising a strike roller.
  • Simple scrapers may be applied to rollers, to prevent material pick-up.
  • Water jets may be provided, in order to lubricate the surface of the screed, to either augment or replace the scraper system.
  • the roller is preferably provided in an arrangement that accommodates a road camber. This is preferably achieved by dividing its length into two or more sections such that it can be deformed along its length, without creating marks in the road surface. If, for example, the laying box is more than 3 m wide, three coaxial roller sections may be used.
  • the respective parts of the roller are preferably connected by means of a hinge support bearing, e.g. with constant velocity drive coupling. If desired, the respective parts may be driven independently, e.g. in order to facilitate the surfacing of road corners.
  • the speed of roller rotation may be controlled and maintained so that it is be governed by the forward speed of the applicator. This may be either by mechanical means or by a fluid motor controlled by an electro-hydraulic servo control system with or without feedback.
  • the thickness of the applied surfacing may be varied by raising or lowering the rollers.
  • the quantity of material supplied to the roller may be controlled, e.g. by means of a conventional strike plate set at a height which will limit the upward climbing force on the roller. This force will be less than that required to lift the thickness-controlling skids off the substrate, and may be controlled by adjusting the compaction coefficient C/C1.
  • Means may also be provided, in order to vibrate the roller. This enhances consolidation of the material.
  • Fig. 1 shows a substrate 1 and that part of a conventional applicator comprising a fixed screed 2 and associated strike plate 2a, travelling at a velocity V2 relative to the substrate.
  • the compaction coefficient is given by C/C1.
  • a surfacing composition 3 is deposited between the substrate 1 and the screed 2 by trailing application.
  • the arrows 4 indicate the horizontal forces generated in the material due to the moving screed, and the arrows 5 indicate allowable vertical movement of the screed 2.
  • Figs. 2 and 3 are provided for direct comparison with Fig. 1. Instead of the screed 2, there is a roller 6 or an endless belt 7 mounted on rollers 8, respectively, driven at a velocity V1.
  • the arrows 9 and 10 respectively indicate vertical and horizontal compaction. In both of the cases illustrated in Figs. 2 and 3, V1 and V2 are approximately the same.
  • Fig. 4 like Fig. 2, shows a substrate 1, a strike plate 2a and a roller 6.
  • a roller drive motor 11 is shown in this case, and is connected to the roller 6 by means of a belt 11a.
  • a scraper 12 For the purposes of cleaning the roller from surfacing composition 3 that is picked up, there are a scraper 12 and a water sprayer 13.
  • Fig. 4 also shows a laying box illustrated generally at 13, including paddles 14 and an auger 15.
  • Fig. 5 shows a Micro Asphalt laying box incorporating a rolling strike plate as described above.
  • the laying box is constructed in conventional fashion and is hinged on the centre line 21 to accommodate any road camber.
  • the two sides of the laying box are the same but of opposite hand.
  • Skids 22 maintain the laying box altitude with respect to the substrate, and also reduce the reproduction of substrate imperfection in the newly formed surface.
  • the mixed material is delivered to the laying box on the box centre line 21 and midway between the agitation paddles 23 and a distribution auger 24 whose speed and direction of rotation can be altered via a fluid drive system 25.
  • a screw or fluid power adjustor 26 is used to vary the height of the box structure above the substrate and so vary the thickness of the applied material.
  • a roller 27 is also hinged, by means of a support bearing with constant velocity drive coupling, on the centre line 21.
  • the roller 27 is provided with its own fluid drive system 28 which enables the roller's rotational speed to be accurately controlled in relation to the forward velocity of the applicator.
  • the roller 27, and its constituent parts 27a and 27b, are shown in more detail in Fig. 6, where the coupling is shown at 30.
  • the height above the substrate of a strike plate 29 can be independently adjusted, to enable the head of material presented to the strike roller to be varied and so vary the compaction coefficient C/C1. Likewise the height of the strike roller 27 above the substrate can be varied, which controls the thickness of the applied material.
  • the strike roller height adjustment will also adjust the height of the strike plate 29, as the two are mechanically linked.
  • the head of material presented to the strike roller 27 will thus be maintained for any strike roller setting, so varying the compaction coefficient C/C1.
  • the roller speed can be controlled manually or using a ground speed-related electro-hydraulic system similar to that used on conventional road construction or agricultural equipment.
  • Tests were also conducted using two coaxial rollers, driven independently, with one roller rotating faster than the other.
  • the roller rotating faster produced a surface with a lower surface texture depth of 1.8 mm compared with a surface texture depth of 2.55 mm for the slower roller, indicating that some horizontal, as well as vertical, compaction was taking place at the surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Paints Or Removers (AREA)

Claims (3)

  1. Verfahren zum Fertigen eines glatten Belages einer Straße (1) mit den Schritten eines Kaltaufbringens einer Asphaltmischung auf die Straße (1) mittels eines Schlittens, der sich in Zugrichtung bewegt und die Kontur der Straße bestimmt, dadurch gekennzeichnet, daß der Schlitten eine Rolle (6, 27) aufweist, wobei die Rolle (6, 27) gegenüber der Mischung mit einer höheren Geschwindigkeit als der Vortriebsgeschwindigkeit gegenüber der Straße während des Auftragens angetrieben wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Schlitten eine einzige Rolle (6) aufweist.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Schlitten eine Rolle (27) aufweist, die in Längsrichtung in mindestens zwei Teile (27a, 27b) unterteilt ist.
EP95304826A 1994-07-19 1995-07-11 Verfahren zum Beschichten einer Strasse Expired - Lifetime EP0693591B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9414555A GB9414555D0 (en) 1994-07-19 1994-07-19 Surfacing apparatus and method
GB9414555 1994-07-19

Publications (2)

Publication Number Publication Date
EP0693591A1 EP0693591A1 (de) 1996-01-24
EP0693591B1 true EP0693591B1 (de) 2001-01-24

Family

ID=10758560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95304826A Expired - Lifetime EP0693591B1 (de) 1994-07-19 1995-07-11 Verfahren zum Beschichten einer Strasse

Country Status (6)

Country Link
EP (1) EP0693591B1 (de)
AT (1) ATE198919T1 (de)
AU (1) AU2502995A (de)
DE (1) DE69519964D1 (de)
GB (1) GB9414555D0 (de)
ZA (1) ZA956026B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9879389B1 (en) 2014-10-30 2018-01-30 Lura Enterprises, Inc. Powered roller screed with adjustable handle for wet screed attachment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1018490A3 (nl) 2009-03-20 2011-01-11 Deme Environmental Contractors Dec Inrichting en werkwijze voor het nivelleren van een open asfaltstructuur.
DE102009024334B4 (de) 2009-06-09 2011-10-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Beschickung einer Materialschicht auf eine Bauplattform oder auf wenigstens eine auf der Bauplattform befindlichen Materialschicht zur Herstellung eines Gegenstandes im Wege eines generativen Herstellungsverfahrens

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324491A1 (de) * 1988-01-15 1989-07-19 WIRTGEN MACCHINE S.r.l. Verfahren und Vorrichtung zum Erneuern von bituminösen Strassendecken mit Wiederverwendung von Belagmaterial im Kaltverfahren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE843856C (de) * 1951-03-15 1952-09-15 Strabag Bau Ag Strassenbaugeraet
US3801211A (en) * 1971-03-03 1974-04-02 G Perkins Pavement grooving process and apparatus
FR2559802B1 (fr) * 1984-02-21 1986-12-26 Screg Routes & Travaux Epandeuse perfectionnee
FR2600091B1 (fr) * 1986-06-17 1988-10-21 Cyrdel Machine pour l'execution de chapes en beton et produits analogues

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324491A1 (de) * 1988-01-15 1989-07-19 WIRTGEN MACCHINE S.r.l. Verfahren und Vorrichtung zum Erneuern von bituminösen Strassendecken mit Wiederverwendung von Belagmaterial im Kaltverfahren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9879389B1 (en) 2014-10-30 2018-01-30 Lura Enterprises, Inc. Powered roller screed with adjustable handle for wet screed attachment

Also Published As

Publication number Publication date
ZA956026B (en) 1996-07-19
AU2502995A (en) 1996-02-01
GB9414555D0 (en) 1994-09-07
ATE198919T1 (de) 2001-02-15
DE69519964D1 (de) 2001-03-01
EP0693591A1 (de) 1996-01-24

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